RetailBirthdayOnline
Birthday bonus points or a free book
At ThriftBooks
ThriftBooks ReadingRewards members get a birthday gift once a year: 100 bonus points at Reader level, 200 bonus points at Bookworm level, and a free book at Literati and Literati Elite levels.
Conditions: Free to join. Add your birthday to your ReadingRewards account before your birthday month; the reward is added during your birthday month. Bookworm needs $75 in purchases in the past 12 months, Literati $150 and Literati Elite $250. The free book is a used book up to your level's value, limited to one per order, and expires 90 days after it is issued. Online and in the ThriftBooks app only. Once per year.